Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH2CH2CN)
文献类型：期刊论文
| 作者 | Zhang, Xia4,5 ; Quan, Donghui1,4; Li, Xiaohu2,4,5; Esimbek, Jarken2,4,5; Li, Fangfang4; Zhou, Yan3; Li, Dalei2,4,5
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2024-09-04 |
| 卷号 | 533期号:3页码:3623-3636 |
| 关键词 | astrochemistry molecular processes ISM: abundances ISM: molecules |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stae2000 |
| 产权排序 | 1 |
| 英文摘要 | Aminoacetonitrile (AAN), also known as glycinenitrile, has been suggested as a possible precursor of glycine and adenine in the interstellar medium. Here we present the chemical modeling of AAN and its isomers in hot cores using the three-phase chemical model NAUTILUS with the addition of over 300 chemical reactions of the three AAN isomers and related species. Our models predicted a peak gas phase abundance of AAN reaching the order of 10(-8), which is consistent with observation towards Sgr B2(N). Regarding the reaction pathways of AAN and its isomers, we found that AAN is primarily formed via free radical reactions on grain surfaces during the early evolutionary stages. Subsequently, it is thermally desorbed into the gas phase as the temperature rises and is then destroyed by positive ions and radicals in gas phase. The isomers of AAN are formed through the hydrogenation reaction of CH3NCN on the grain surface and via electron recombination reactions of ion C2H5N2+ in gas phase. We speculate that there is a possibility for NCCN and AAN to react with each other, eventually leading to the formation of adenine in hot cores. However, further investigation is required to understand the efficiency of grain surfaces in adenine formation, through theoretical calculations or laboratory experiments in future research |
| WOS关键词 | EXPLORING MOLECULAR COMPLEXITY ; COUPLED-CLUSTER SINGLES ; HOT CORES ; ORGANIC-MOLECULES ; AMINO-ACIDS ; CHEMISTRY ; GAS ; PHASE ; ENERGY ; HYDROGENATION |
| 资助项目 | National Natural Science Foundation of China[12203091] ; National Natural Science Foundation of China[12373026] ; National Natural Science Foundation of China[12173075] ; National Natural Science Foundation of China[2022D01A156] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022YFA1603103] ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001305885900011 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6972]  |
| 专题 | 天体化学研究团组 |
| 通讯作者 | Zhang, Xia; Quan, Donghui; Li, Xiaohu |
| 作者单位 | 1.Zhejiang Lab, Res Ctr Astron Comp, Hangzhou 311100, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 3.Shandong Univ Aeronaut & Astronaut, Coll Sci, 391 Huanghe 5th Rd, Binzhou City 256600, Shandong, Peoples R China 4.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 5.Xinjiang Key Lab Radio Astrophys, 150 Sci 1 St, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xia,Quan, Donghui,Li, Xiaohu,et al. Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH2CH2CN)[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,533(3):3623-3636. |
| APA | Zhang, Xia.,Quan, Donghui.,Li, Xiaohu.,Esimbek, Jarken.,Li, Fangfang.,...&Li, Dalei.(2024).Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH2CH2CN).MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,533(3),3623-3636. |
| MLA | Zhang, Xia,et al."Chemical models of interstellar glycine and adenine precursor aminoacetonitrile (NH2CH2CN)".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 533.3(2024):3623-3636. |
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来源：新疆天文台
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